Currently an EE undergraduate at BeiHang University. Self-studying DSP.

Hi,   There are loads of audio speed changer software on the web. These software seems to be able to change audio speed without changing the pitch of human voice...

Re: Off Topic: A geometry problem

Reply posted 4 years ago (11/16/2017)
I remember I came across this problem at Grade 7. That is exactly how we taught to solve the problem. Find the solution very intuitive. :)

Re: What is Windowing and when/why do we need it?

Reply posted 4 years ago (11/03/2017)
Windowing, to my best understanding, is In Signal processing: 1.to trancate signals which are of your interest2.to reduce memory requirement and accelerate computation...
Hi,Sharan123,I think FFT(fast fourier transform) is an algorithm for implementing DFT(Discrete Fourier Transform). And IDFT - x(k)=1/N*summation (X(i)*exp(j*w0*i*K)...

Re: Upper bound on the decimation factor M

Reply posted 5 years ago (08/18/2016)
Thank you for your time. But how can the second not efficient relative to single rate filter? Could you shed some lights on this?Chuan

Re: Upper bound on the decimation factor M

Reply posted 5 years ago (08/17/2016)
Dr. mike, Do you agree with me on this? I think the upper bond is fs/2F0 for M. Here are my reasons. Here fs stands for sampling rate, F0 is the cutoff frequency...

Re: Upper bound on the decimation factor M

Reply posted 5 years ago (08/17/2016)
Thank you, Dr. mike!!!

Upper bound on the decimation factor M

New thread started 5 years ago
Dear experts,                          Hi, I am a Chinese student at BeiHang Uni. I am now self-studying DSP. I had a difficulty understanding a restraint...

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